1 files changed, 0 insertions, 356 deletions
diff --git a/target/linux/bcm27xx/patches-4.19/950-0237-staging-mmal-vchiq-Add-support-for-event-callbacks.patch b/target/linux/bcm27xx/patches-4.19/950-0237-staging-mmal-vchiq-Add-support-for-event-callbacks.patch
deleted file mode 100644
index b79bdb8412..0000000000
--- a/target/linux/bcm27xx/patches-4.19/950-0237-staging-mmal-vchiq-Add-support-for-event-callbacks.patch
+++ /dev/null
@@ -1,356 +0,0 @@
-From adab474d1f91594d6d96d44054586ba36d7f26d4 Mon Sep 17 00:00:00 2001
-From: Dave Stevenson <dave.stevenson@raspberrypi.org>
-Date: Mon, 24 Sep 2018 18:15:38 +0100
-Subject: [PATCH] staging: mmal-vchiq: Add support for event callbacks.
-
-(Preparation for the codec driver).
-The codec uses the event mechanism to report things such as
-resolution changes. It is signalled by the cmd field of the buffer
-being non-zero.
-
-Add support for passing this information out to the client.
-
-Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
----
- .../vc04_services/vchiq-mmal/mmal-common.h    |   1 +
- .../vc04_services/vchiq-mmal/mmal-msg.h       |  35 ++++
- .../vc04_services/vchiq-mmal/mmal-vchiq.c     | 170 ++++++++++++++++--
- .../vc04_services/vchiq-mmal/mmal-vchiq.h     |   4 +
- 4 files changed, 196 insertions(+), 14 deletions(-)
-
---- a/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
-+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-common.h
-@@ -51,6 +51,7 @@ struct mmal_buffer {
- 
- 	struct mmal_msg_context *msg_context;
- 
-+	u32 cmd;		/* MMAL command. 0=data. */
- 	unsigned long length;
- 	u32 mmal_flags;
- 	s64 dts;
---- a/drivers/staging/vc04_services/vchiq-mmal/mmal-msg.h
-+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-msg.h
-@@ -346,6 +346,41 @@ struct mmal_msg_port_parameter_get_reply
- /* event messages */
- #define MMAL_WORKER_EVENT_SPACE 256
- 
-+/* Four CC's for events */
-+#define MMAL_FOURCC(a, b, c, d) ((a) | (b << 8) | (c << 16) | (d << 24))
-+
-+#define MMAL_EVENT_ERROR		MMAL_FOURCC('E', 'R', 'R', 'O')
-+#define MMAL_EVENT_EOS			MMAL_FOURCC('E', 'E', 'O', 'S')
-+#define MMAL_EVENT_FORMAT_CHANGED	MMAL_FOURCC('E', 'F', 'C', 'H')
-+#define MMAL_EVENT_PARAMETER_CHANGED	MMAL_FOURCC('E', 'P', 'C', 'H')
-+
-+/* Structs for each of the event message payloads */
-+struct mmal_msg_event_eos {
-+	u32 port_type;	/**< Type of port that received the end of stream */
-+	u32 port_index;	/**< Index of port that received the end of stream */
-+};
-+
-+/** Format changed event data. */
-+struct mmal_msg_event_format_changed {
-+	/* Minimum size of buffers the port requires */
-+	u32 buffer_size_min;
-+	/* Minimum number of buffers the port requires */
-+	u32 buffer_num_min;
-+	/* Size of buffers the port recommends for optimal performance.
-+	 * A value of zero means no special recommendation.
-+	 */
-+	u32 buffer_size_recommended;
-+	/* Number of buffers the port recommends for optimal
-+	 * performance. A value of zero means no special recommendation.
-+	 */
-+	u32 buffer_num_recommended;
-+
-+	u32 es_ptr;
-+	struct mmal_es_format format;
-+	union mmal_es_specific_format es;
-+	u8 extradata[MMAL_FORMAT_EXTRADATA_MAX_SIZE];
-+};
-+
- struct mmal_msg_event_to_host {
- 	u32 client_component;	/* component context */
- 
---- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
-+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
-@@ -151,6 +151,8 @@ struct mmal_msg_context {
- 			/* Presentation and Decode timestamps */
- 			s64 pts;
- 			s64 dts;
-+			/* MMAL buffer command flag */
-+			u32 cmd;
- 
- 			int status;	/* context status */
- 
-@@ -238,18 +240,6 @@ release_msg_context(struct mmal_msg_cont
- 	kfree(msg_context);
- }
- 
--/* deals with receipt of event to host message */
--static void event_to_host_cb(struct vchiq_mmal_instance *instance,
--			     struct mmal_msg *msg, u32 msg_len)
--{
--	pr_debug("unhandled event\n");
--	pr_debug("component:%u port type:%d num:%d cmd:0x%x length:%d\n",
--		 msg->u.event_to_host.client_component,
--		 msg->u.event_to_host.port_type,
--		 msg->u.event_to_host.port_num,
--		 msg->u.event_to_host.cmd, msg->u.event_to_host.length);
--}
--
- /* workqueue scheduled callback
-  *
-  * we do this because it is important we do not call any other vchiq
-@@ -271,13 +261,18 @@ static void buffer_work_cb(struct work_s
- 	buffer->mmal_flags = msg_context->u.bulk.mmal_flags;
- 	buffer->dts = msg_context->u.bulk.dts;
- 	buffer->pts = msg_context->u.bulk.pts;
-+	buffer->cmd = msg_context->u.bulk.cmd;
- 
--	atomic_dec(&msg_context->u.bulk.port->buffers_with_vpu);
-+	if (!buffer->cmd)
-+		atomic_dec(&msg_context->u.bulk.port->buffers_with_vpu);
- 
- 	msg_context->u.bulk.port->buffer_cb(msg_context->u.bulk.instance,
- 					    msg_context->u.bulk.port,
- 					    msg_context->u.bulk.status,
- 					    msg_context->u.bulk.buffer);
-+
-+	if (buffer->cmd)
-+		mutex_unlock(&msg_context->u.bulk.port->event_context_mutex);
- }
- 
- /* workqueue scheduled callback to handle receiving buffers
-@@ -356,6 +351,7 @@ static int bulk_receive(struct vchiq_mma
- 	msg_context->u.bulk.buffer_used = rd_len;
- 	msg_context->u.bulk.dts = msg->u.buffer_from_host.buffer_header.dts;
- 	msg_context->u.bulk.pts = msg->u.buffer_from_host.buffer_header.pts;
-+	msg_context->u.bulk.cmd = msg->u.buffer_from_host.buffer_header.cmd;
- 
- 	queue_work(msg_context->instance->bulk_wq,
- 		   &msg_context->u.bulk.buffer_to_host_work);
-@@ -457,6 +453,103 @@ buffer_from_host(struct vchiq_mmal_insta
- 	return ret;
- }
- 
-+/* deals with receipt of event to host message */
-+static void event_to_host_cb(struct vchiq_mmal_instance *instance,
-+			     struct mmal_msg *msg, u32 msg_len)
-+{
-+	/* FIXME: Not going to work on 64 bit */
-+	struct vchiq_mmal_component *component =
-+		(struct vchiq_mmal_component *)msg->u.event_to_host.client_component;
-+	struct vchiq_mmal_port *port = NULL;
-+	struct mmal_msg_context *msg_context;
-+	u32 port_num = msg->u.event_to_host.port_num;
-+
-+	if (msg->u.buffer_from_host.drvbuf.magic == MMAL_MAGIC) {
-+		pr_err("%s: MMAL_MSG_TYPE_BUFFER_TO_HOST with bad magic\n",
-+		       __func__);
-+		return;
-+	}
-+
-+	switch (msg->u.event_to_host.port_type) {
-+	case MMAL_PORT_TYPE_CONTROL:
-+		if (port_num) {
-+			pr_err("%s: port_num of %u >= number of ports 1",
-+			       __func__, port_num);
-+			return;
-+		}
-+		port = &component->control;
-+		break;
-+	case MMAL_PORT_TYPE_INPUT:
-+		if (port_num >= component->inputs) {
-+			pr_err("%s: port_num of %u >= number of ports %u",
-+			       __func__, port_num,
-+			       port_num >= component->inputs);
-+			return;
-+		}
-+		port = &component->input[port_num];
-+		break;
-+	case MMAL_PORT_TYPE_OUTPUT:
-+		if (port_num >= component->outputs) {
-+			pr_err("%s: port_num of %u >= number of ports %u",
-+			       __func__, port_num,
-+			       port_num >= component->outputs);
-+			return;
-+		}
-+		port = &component->output[port_num];
-+		break;
-+	case MMAL_PORT_TYPE_CLOCK:
-+		if (port_num >= component->clocks) {
-+			pr_err("%s: port_num of %u >= number of ports %u",
-+			       __func__, port_num,
-+			       port_num >= component->clocks);
-+			return;
-+		}
-+		port = &component->clock[port_num];
-+		break;
-+	default:
-+		break;
-+	}
-+
-+	if (!mutex_trylock(&port->event_context_mutex)) {
-+		pr_err("dropping event 0x%x\n", msg->u.event_to_host.cmd);
-+		return;
-+	}
-+	msg_context = port->event_context;
-+
-+	if (msg->h.status != MMAL_MSG_STATUS_SUCCESS) {
-+		/* message reception had an error */
-+		//pr_warn
-+		pr_err("%s: error %d in reply\n", __func__, msg->h.status);
-+
-+		msg_context->u.bulk.status = msg->h.status;
-+	} else if (msg->u.event_to_host.length > MMAL_WORKER_EVENT_SPACE) {
-+		/* data is not in message, queue a bulk receive */
-+		pr_err("%s: payload not in message - bulk receive??! NOT SUPPORTED\n",
-+		       __func__);
-+		msg_context->u.bulk.status = -1;
-+	} else {
-+		memcpy(msg_context->u.bulk.buffer->buffer,
-+		       msg->u.event_to_host.data,
-+		       msg->u.event_to_host.length);
-+
-+		msg_context->u.bulk.buffer_used =
-+		    msg->u.event_to_host.length;
-+
-+		msg_context->u.bulk.mmal_flags = 0;
-+		msg_context->u.bulk.dts = MMAL_TIME_UNKNOWN;
-+		msg_context->u.bulk.pts = MMAL_TIME_UNKNOWN;
-+		msg_context->u.bulk.cmd = msg->u.event_to_host.cmd;
-+
-+		pr_debug("event component:%u port type:%d num:%d cmd:0x%x length:%d\n",
-+			 msg->u.event_to_host.client_component,
-+			 msg->u.event_to_host.port_type,
-+			 msg->u.event_to_host.port_num,
-+			 msg->u.event_to_host.cmd, msg->u.event_to_host.length);
-+	}
-+
-+	schedule_work(&msg_context->u.bulk.work);
-+}
-+
- /* deals with receipt of buffer to host message */
- static void buffer_to_host_cb(struct vchiq_mmal_instance *instance,
- 			      struct mmal_msg *msg, u32 msg_len)
-@@ -1340,6 +1433,7 @@ static int port_disable(struct vchiq_mma
- 				mmalbuf->mmal_flags = 0;
- 				mmalbuf->dts = MMAL_TIME_UNKNOWN;
- 				mmalbuf->pts = MMAL_TIME_UNKNOWN;
-+				mmalbuf->cmd = 0;
- 				port->buffer_cb(instance,
- 						port, 0, mmalbuf);
- 			}
-@@ -1641,6 +1735,43 @@ int mmal_vchi_buffer_cleanup(struct mmal
- }
- EXPORT_SYMBOL_GPL(mmal_vchi_buffer_cleanup);
- 
-+static void init_event_context(struct vchiq_mmal_instance *instance,
-+			       struct vchiq_mmal_port *port)
-+{
-+	struct mmal_msg_context *ctx = get_msg_context(instance);
-+
-+	mutex_init(&port->event_context_mutex);
-+
-+	port->event_context = ctx;
-+	ctx->u.bulk.instance = instance;
-+	ctx->u.bulk.port = port;
-+	ctx->u.bulk.buffer =
-+		kzalloc(sizeof(*ctx->u.bulk.buffer), GFP_KERNEL);
-+	if (!ctx->u.bulk.buffer)
-+		goto release_msg_context;
-+	ctx->u.bulk.buffer->buffer = kzalloc(MMAL_WORKER_EVENT_SPACE,
-+					     GFP_KERNEL);
-+	if (!ctx->u.bulk.buffer->buffer)
-+		goto release_buffer;
-+
-+	INIT_WORK(&ctx->u.bulk.work, buffer_work_cb);
-+	return;
-+
-+release_buffer:
-+	kfree(ctx->u.bulk.buffer);
-+release_msg_context:
-+	release_msg_context(ctx);
-+}
-+
-+static void free_event_context(struct vchiq_mmal_port *port)
-+{
-+	struct mmal_msg_context *ctx = port->event_context;
-+
-+	kfree(ctx->u.bulk.buffer->buffer);
-+	kfree(ctx->u.bulk.buffer);
-+	release_msg_context(ctx);
-+}
-+
- /* Initialise a mmal component and its ports
-  *
-  */
-@@ -1684,6 +1815,7 @@ int vchiq_mmal_component_init(struct vch
- 	ret = port_info_get(instance, &component->control);
- 	if (ret < 0)
- 		goto release_component;
-+	init_event_context(instance, &component->control);
- 
- 	for (idx = 0; idx < component->inputs; idx++) {
- 		component->input[idx].type = MMAL_PORT_TYPE_INPUT;
-@@ -1694,6 +1826,7 @@ int vchiq_mmal_component_init(struct vch
- 		ret = port_info_get(instance, &component->input[idx]);
- 		if (ret < 0)
- 			goto release_component;
-+		init_event_context(instance, &component->input[idx]);
- 	}
- 
- 	for (idx = 0; idx < component->outputs; idx++) {
-@@ -1705,6 +1838,7 @@ int vchiq_mmal_component_init(struct vch
- 		ret = port_info_get(instance, &component->output[idx]);
- 		if (ret < 0)
- 			goto release_component;
-+		init_event_context(instance, &component->output[idx]);
- 	}
- 
- 	for (idx = 0; idx < component->clocks; idx++) {
-@@ -1716,6 +1850,7 @@ int vchiq_mmal_component_init(struct vch
- 		ret = port_info_get(instance, &component->clock[idx]);
- 		if (ret < 0)
- 			goto release_component;
-+		init_event_context(instance, &component->clock[idx]);
- 	}
- 
- 	*component_out = component;
-@@ -1741,7 +1876,7 @@ EXPORT_SYMBOL_GPL(vchiq_mmal_component_i
- int vchiq_mmal_component_finalise(struct vchiq_mmal_instance *instance,
- 				  struct vchiq_mmal_component *component)
- {
--	int ret;
-+	int ret, idx;
- 
- 	if (mutex_lock_interruptible(&instance->vchiq_mutex))
- 		return -EINTR;
-@@ -1753,6 +1888,13 @@ int vchiq_mmal_component_finalise(struct
- 
- 	component->in_use = 0;
- 
-+	for (idx = 0; idx < component->inputs; idx++)
-+		free_event_context(&component->input[idx]);
-+	for (idx = 0; idx < component->outputs; idx++)
-+		free_event_context(&component->output[idx]);
-+	for (idx = 0; idx < component->clocks; idx++)
-+		free_event_context(&component->clock[idx]);
-+
- 	mutex_unlock(&instance->vchiq_mutex);
- 
- 	return ret;
---- a/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.h
-+++ b/drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.h
-@@ -78,6 +78,10 @@ struct vchiq_mmal_port {
- 	vchiq_mmal_buffer_cb buffer_cb;
- 	/* callback context */
- 	void *cb_ctx;
-+
-+	/* ensure serialised use of the one event context structure */
-+	struct mutex event_context_mutex;
-+	struct mmal_msg_context *event_context;
- };
- 
- struct vchiq_mmal_component {